Air purifier



FIG. 1 is a perspective view of an air purifier of the new design;

FIG. 2 is a front elevational view of the air purifier of FIG. 1;

FIG. 3 is a right side elevational view of the air purifier of FIG. 1;

FIG. 4 is back elevational view of the air purifier of FIG. 1;

FIG. 5 is a left side elevational view of the air purifier of FIG. 1;

FIG. 6 is a top plan view of the air purifier of FIG. 1; and,

FIG. 7 is bottom view of the air purifier of FIG. 1.

The broken lines depict portions of the air purifier that form no partof the claim.

CLAIM The ornamental design for an air purifier, as shown and described.